CN212207074U - Water quality detection system - Google Patents
Water quality detection system Download PDFInfo
- Publication number
- CN212207074U CN212207074U CN201922500215.0U CN201922500215U CN212207074U CN 212207074 U CN212207074 U CN 212207074U CN 201922500215 U CN201922500215 U CN 201922500215U CN 212207074 U CN212207074 U CN 212207074U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- fiber bundle
- water quality
- detection system
- quality detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Measuring Cells (AREA)
Abstract
The utility model provides a water quality detection system, which comprises a light source, a detection pool and a first detector; the measuring light emitted by the light source is coupled into the first end of the first optical fiber bundle, and the light emitted from the second end of the first optical fiber bundle is received by the second detector; a first fiber optic bundle at the first end is split into a first portion and a second portion that are symmetric about a principal optical axis of the light source or symmetric about a linear axis perpendicular to the principal optical axis of the light source; the second detector converts the optical signal into an electrical signal; the measuring light is coupled into the first end of the second optical fiber bundle, and the second end of the second optical fiber bundle emits light to the detection cell; the first optical fiber bundle at the first end of the second optical fiber bundle is divided into a third portion and a fourth portion, the third portion and the fourth portion being symmetric about a principal optical axis of the light source or symmetric about a straight line axis perpendicular to the principal optical axis of the light source. The utility model has the advantages of detect the precision height.
Description
Technical Field
The utility model relates to a water quality testing, in particular to introduce the water quality testing system that real time monitoring light source changed.
Background
At present, the water quality on-line monitoring system generally has the following problems:
1. the measurement result is unstable due to the attenuation of the system by the light source;
2. the digestion tank has dead volume, so that the digestion is incomplete and the digestion consistency is poor;
3. in practical applications, occasionally, insufficient reagents or no water sample is taken, which results in abnormal values in the measurement process.
SUMMERY OF THE UTILITY MODEL
For solving not enough among the above-mentioned prior art scheme, the utility model provides a water quality testing system has solved the signal fluctuation scheduling problem that the short-term temperature fluctuation of light source arouses.
The utility model aims at realizing through the following technical scheme:
the water quality detection system comprises a light source, a detection pool and a first detector; the water quality detection system further comprises:
the measuring light emitted by the light source is coupled into the first end of the first optical fiber bundle, and the light emitted from the second end of the first optical fiber bundle is received by the second detector; a first fiber optic bundle at the first end is split into a first portion and a second portion that are symmetric about a principal optical axis of the light source or symmetric about a linear axis perpendicular to the principal optical axis of the light source;
a second detector that converts the optical signal into an electrical signal;
the measuring light is coupled into the first end of the second optical fiber bundle, and the second end of the second optical fiber bundle emits light to the detection cell; the first optical fiber bundle at the first end of the second optical fiber bundle is divided into a third portion and a fourth portion, the third portion and the fourth portion being symmetric about a principal optical axis of the light source or symmetric about a straight line axis perpendicular to the principal optical axis of the light source.
In order to solve the problem that the detection pool (digestion tank) has dead volume on the basis of the purpose of the utility model, the water quality detection system is also provided with a first valve which is directly connected with the lower end opening of the detection pool; a second valve directly connected to an upper end opening of the detection cell.
In order to realize solving the problem that the interior liquid flow of pipeline was judged on the basis of above-mentioned utility model purpose, on the basis of above-mentioned water quality testing system, set up liquid sensor between the common port of valve and stock solution ring is selected to the multichannel, liquid sensor includes:
and the two photoelectric detection units are sequentially arranged on the flow path and comprise light sources and detectors arranged on two sides of the liquid flow path.
Compared with the prior art, the utility model discloses the beneficial effect who has does:
1. the drift is small, and the detection accuracy is high;
the special arrangement of the first optical fiber bundle and the second optical fiber bundle is introduced, so that the problem that an online monitoring system is influenced by the ambient temperature is effectively solved, the measurement result basically has no drift at the ambient temperature of 5-40 ℃, and the accuracy of the detection result is improved;
2. the module integration of digestion and detection of the water quality monitoring system is realized, the digestion dead volume is eliminated, and the consistency and the stability of the measurement result are improved;
3. the problem that the liquid taking accuracy of the water quality monitoring system is affected by the ambient temperature is solved by adopting the integrated plunger pump, and the quantitative precision and accuracy are improved;
4. the real-time monitoring and calibration of the liquid state in the transparent tube of the on-line monitoring system are realized, the liquid flowing direction and bubbles can be identified, and the liquid taking accuracy is improved;
5. the maintenance and calibration work of the liquid sensor is reduced, and the engineering maintenance cost is reduced.
Drawings
The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only intended to illustrate the technical solution of the present invention and are not intended to limit the scope of the present invention. In the figure:
FIG. 1 is a schematic view of a water quality detecting system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an arrangement of optical fiber bundles according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an arrangement of optical fiber bundles according to an embodiment of the present invention.
Detailed Description
Fig. 1-3 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. For the purpose of teaching the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations or substitutions from these embodiments that will be within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Accordingly, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.
Example 1:
fig. 1 schematically shows a schematic structural diagram of a water quality detection system according to an embodiment of the present invention, and as shown in fig. 1, the water quality detection system includes:
the device comprises a light source 2, a first detector and a detection cell 4, wherein the first detector receives measuring light which is emitted by the light source 2 and passes through the detection cell 4; these devices are prior art in the field, and the specific structure and operation are not described herein;
a first optical fiber bundle 13, wherein the measuring light emitted by the light source 2 is coupled into a first end of the first optical fiber bundle 13, and the light emitted from a second end of the first optical fiber bundle 13 is received by a second detector; the first bundle 13 at the first end is split into a first part and a second part, which are symmetric about the main optical axis of the light source or symmetric about a straight line axis perpendicular to the main optical axis of the light source, as shown in fig. 2-3;
a second detector that converts the optical signal into an electrical signal;
a second optical fiber bundle 14, wherein the measuring light is coupled into a first end of the second optical fiber bundle 14, and a second end of the second optical fiber bundle is emitted to the detection cell; the first optical fiber bundle at the first end of the second optical fiber bundle is divided into a third portion and a fourth portion, the third portion and the fourth portion being symmetric about a principal optical axis of the light source or symmetric about a straight line axis perpendicular to the principal optical axis of the light source; the first end of the first bundle 13 and the first end of the second bundle 14 are bundled together and then split into a first bundle and a second bundle, as shown in fig. 2-3.
In order to solve the dead volume problem of the detection pool (digestion tank), further, the water quality detection system further comprises:
a first valve 12 directly connected to the lower end opening of the detection cell
And a second valve 1112, wherein the second valve 11 is directly connected with the upper end opening of the detection cell.
In order to reduce the structural complexity and improve the operational reliability, further, the water quality detection system further includes:
and a port of the multi-channel direction selection valve is connected with the detection pool 4, a digestion agent, a reagent, a water sample and the like through a pipeline, and a public end is connected with a liquid storage ring 7 and a pump 8 (such as a syringe pump or a plunger pump).
In order to detect whether the pipeline has liquid or bubbles and the flowing direction of the liquid, a liquid sensor 6 is further arranged between the public end and the liquid storage ring, and the liquid sensor comprises:
and the two photoelectric detection units are sequentially arranged on the flow path and comprise light sources and detectors arranged on two sides of the liquid flow path.
Example 2:
according to the utility model discloses water quality testing's application example in heavy metal detection.
In this application, as shown in fig. 1-2, one ends of the first optical fiber bundle 13 and the second optical fiber bundle 14 are bundled together and have a circular cross section; the area ratio of the first optical fiber bundle 13 to the second optical fiber bundle 14 is 1:4, the arrangement of the first optical fiber bundle is symmetrical about the main optical axis of the measuring light, and the arrangement of the second optical fiber bundle is symmetrical about the main optical axis of the measuring light; a multi-channel direction selection valve 5 is adopted, a common end is sequentially connected with a liquid sensor 6, a liquid storage ring 7 and a plunger pump 8, and other ports are respectively communicated with outside air and various liquids, such as a digestion agent, a reagent, a water sample and the like; the first detector and the second detector are separately and independently arranged, and the first optical fiber bundle 13 directly transmits part of the measuring light to the second detector; the upper end opening and the lower end opening of the detection pool 4 (digestion tank) are respectively and directly connected with a valve; the liquid sensor 6 comprises two sets of photoelectric detection units which are sequentially arranged between a public end and a liquid storage ring, each set of photoelectric detection unit comprises a light source and a detector which are respectively arranged at two sides of a transparent pipeline (the transmittance of light emitted by the light source in the photoelectric detection unit exceeds 80%), a signal is received by the detector to obtain the transmittance, whether liquid passes through the pipeline (the liquid passes through the pipeline is judged by suddenly reducing the signal (the transmittance) received by the detector), whether bubbles exist in the passing liquid (the transmittance of the liquid when the bubbles exist is greater than the transmittance of the liquid when the bubbles do not exist), and the flow direction of the liquid is obtained by utilizing the change of the transmittance of the two sets of photoelectric detection units: the transmittance is changed from large to small firstly, which indicates that the liquid passes through the photoelectric detection unit firstly; the transmittance changes first (from small to large), indicating that the liquid has exited the photodetector cell first.
In the work of the water quality detection system, the first optical fiber bundle is adopted to conduct the optical signal to inhibit the signal fluctuation caused by the transient temperature fluctuation of the light source, the optical signal error caused by the long-term attenuation of the light source is deducted, the environmental temperature adaptability is enhanced, and the stability and the accuracy of the system are improved.
Under different temperatures, the light source has the problems of different emitted light signal strengths, different divergence angles, red shift, blue shift and the like of light, so that the measured value of the on-line monitoring system has larger drift. To eliminate this effect, the first optical fiber bundle (second optical fiber bundle) is symmetrical with respect to a main optical axis of the light source or is symmetrical with respect to a straight line axis perpendicular to the main optical axis of the light source. When the emission angle and the signal strength of the optical signal change at different temperatures, the signals received by the detection optical path of the second optical fiber bundle and the optical path of the first optical fiber bundle are influenced in equal proportion, so that the influence can be deducted by the first optical fiber bundle, and the problem of measurement result drift caused by signal drift is avoided.
Example 3:
according to the utility model discloses water quality testing's application example in heavy metal detection, different with embodiment 2 is:
1. as shown in fig. 3, the arrangement of the first optical fiber bundle 13 is symmetrical with respect to a linear axis perpendicular to the main optical axis of the measurement light, and the arrangement of the second optical fiber bundle 14 is symmetrical with respect to a linear axis perpendicular to the main optical axis of the measurement light;
2. the first detector and the second detector share the same function, and a switching module is used, and the switching module is used for enabling the emergent light of the first optical fiber bundle and the emergent light of the second optical fiber bundle to selectively enter the first detector.
The above embodiments only exemplarily show that the sequential injection platform is used to achieve quantitative pumping and delivery of various types of liquids, but other technical means, such as a combination of multiple pumps and valves, may also be used to achieve the same function of the sequential injection platform.
Claims (10)
1. The water quality detection system comprises a light source, a detection pool and a first detector; the method is characterized in that: the water quality detection system further comprises:
the measuring light emitted by the light source is coupled into the first end of the first optical fiber bundle, and the light emitted from the second end of the first optical fiber bundle is received by the second detector; a first fiber optic bundle at the first end is split into a first portion and a second portion that are symmetric about a principal optical axis of the light source or symmetric about a linear axis perpendicular to the principal optical axis of the light source;
a second detector that converts the optical signal into an electrical signal;
the measuring light is coupled into the first end of the second optical fiber bundle, and the second end of the second optical fiber bundle emits light to the detection cell; the first optical fiber bundle at the first end of the second optical fiber bundle is divided into a third portion and a fourth portion, the third portion and the fourth portion being symmetric about a principal optical axis of the light source or symmetric about a straight line axis perpendicular to the principal optical axis of the light source.
2. The water quality detection system according to claim 1, characterized in that: the first end of the first optical fiber bundle and the first end of the second optical fiber bundle are bundled together.
3. The water quality detection system according to claim 1, characterized in that: the first optical fiber bundle and the second optical fiber bundle bundled together have a circular cross section.
4. The water quality detection system according to claim 1, characterized in that: the water quality detection system further comprises:
a first valve directly connected with the lower end opening of the detection cell
A second valve directly connected to an upper end opening of the detection cell.
5. The water quality detection system according to claim 1, characterized in that: the water quality detection system further comprises:
and the port of the multi-channel direction selection valve is connected with the detection pool through a pipeline, and the public end is connected with the liquid storage ring and the pump.
6. The water quality detection system according to claim 5, wherein: the pump is a syringe pump or a plunger pump.
7. The water quality detection system according to claim 5, wherein: set up liquid sensor between common port and the stock solution ring, liquid sensor includes:
and the two photoelectric detection units are sequentially arranged on the flow path and comprise light sources and detectors arranged on two sides of the liquid flow path.
8. The water quality detection system according to claim 1, characterized in that: the first detector and the second detector are common.
9. The water quality detection system according to claim 8, wherein: the water quality detection system further comprises:
and the switching module is used for enabling the emergent light of the first optical fiber bundle and the second optical fiber bundle to be selectively incident on the first detector.
10. The water quality detecting system according to claim 9, characterized in that: the switching module is a chopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922500215.0U CN212207074U (en) | 2019-12-31 | 2019-12-31 | Water quality detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922500215.0U CN212207074U (en) | 2019-12-31 | 2019-12-31 | Water quality detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212207074U true CN212207074U (en) | 2020-12-22 |
Family
ID=73810813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922500215.0U Active CN212207074U (en) | 2019-12-31 | 2019-12-31 | Water quality detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212207074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089842A (en) * | 2019-12-31 | 2020-05-01 | 聚光科技(杭州)股份有限公司 | water quality testing system |
-
2019
- 2019-12-31 CN CN201922500215.0U patent/CN212207074U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089842A (en) * | 2019-12-31 | 2020-05-01 | 聚光科技(杭州)股份有限公司 | water quality testing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204536209U (en) | Nutritive salt in-situ automatic analyzer instrument | |
| CN205941582U (en) | Modularization multi -parameter quality of water automatic on -line monitor | |
| CN102841060B (en) | On-line water quality quick detection system | |
| CN105738359A (en) | Online detector for water hardness | |
| DE19624844C2 (en) | Device for measuring the partial pressure of gases dissolved in liquids in systems for carrying out biotechnological or food technology processes | |
| CN212207074U (en) | Water quality detection system | |
| US3619068A (en) | Refractometer | |
| CN204086284U (en) | A kind of water quality analytical system | |
| CN201993318U (en) | Ammonia nitrogen online automatic monitor | |
| CN203376015U (en) | Accurate optical quantitative metering device | |
| CN113155238B (en) | Intelligent oil interface detection device | |
| JP3222419U (en) | Water quality analyzer | |
| CN209247625U (en) | A kind of micro-fluidic NH 3 flow path system | |
| CN202057582U (en) | Flowing cuvette cell capable of simultaneously carrying out absorbance and fluorescence detection | |
| CN104764860A (en) | Analyzing and metering device and liquid analysis system | |
| CN111089842A (en) | water quality testing system | |
| CN216525441U (en) | Permanganate index single-parameter measuring device applicable to miniature water station | |
| CN114136883B (en) | Detection system and method of multivalent plutonium in nuclear fuel reprocessing | |
| CN1912579A (en) | COD photoelectric detection device | |
| CN201199244Y (en) | System for distributing standard liquid of electrolytic analytical instrument | |
| CN204346907U (en) | A kind of self calibration air chamber and fiber gas sensor detection system | |
| CN104764861A (en) | Analyzing and metering device and liquid analysis system | |
| CN108398366B (en) | Comprehensive detection and analysis system and method for gas quality of compressed air of power plant | |
| CN211014006U (en) | Liquid detection device | |
| CN201408166Y (en) | Submerged rapid water quality analyzer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |